Apparatuses for winding a strip with sheets thereon around the platen of a listing machine



1963 w. BOLINDER ETAL 3,

APPARATUSES FOR WINDING A STRIP WITH SHEETS THEREON AROUND THE PLATEN OF A LISTING MACHINE Fil'ed Jan. 16, 1961 I N VENTORS LUDVIG WILHELM BOLINJER THURE BERNHRRD BOGERT w ROLF SYLVEN DECEASED. a): MART/3 SYL VE/V ADMIN/STIPA TR/X ATTORNEY United States Patent APPARATUSES'FOR: ING A STRIP wntH,v

Malmo, Sweden, and-Rolf Sylv'n, deceased, late of Malmo, Sweden,- by Marta Sylvn, administratrix', Malina," Sweden, assignors' to Aktiebolaget Addo, Malmo, Sweden, a corporation otSweden Filed Jan. 16, 1961, Ser. No. 83,861

Claims priority, application Sweden Jan; 21, 1960 3 Claims. (Cl. 226-157) In listing machines, such as listing calculating machines and ordinary typewriting machines, it is known to write on sheetsQ-eg. labels, supplied-to the'machinein'a'se quence in that the sheets are secured in a row to asupporting strip which is advanced around the platen of the machine. Because of unavoidable variations of the spacing at which the sheets are secured to the strip; and theunavoidable slip of the strip advancing mechanism the strip often had to be adjusted'by hand in the prior-art apparatuses for a correct positioningof' the writing lines on the sheets. The drawback is particularly apparent when the sheetsalready have printed text'lines' thereon with which the text written by the machine has'to'be aligned.

The present invention overcomes the drawback inherent in the prior-art apparatuses. Thus the invention relates to an apparatus for advancing, from a supply to the platen of a listing machine, such as a listing calcu lating. machine, a strip supportinga longitudinal row-ofspaced sheets arranged-onthe strip at'a spacing varying between-a maximum value and a minimum value, and intended to have data printed'on them in'the listing 'ca-lculating machine. The primary characteristic features of the invention'reside in that an operable means, each time it is operated, tends to advance the strip by friction through a step at least equal to, or corresponding to the reciprocal of an integer smaller than, the maximum value of the-sheet spacing; and'that'a'gripping finger is adapted to'be pressed'against thestrip and the sheets thereon after said strip 'supplyas-seen in the direction of advance of'the strip and to engage anedge of the sheets on said stripwhen the sheetsarrive at said gripping finger during the advance of the strip, thereby retaining the strip so as to discontinue'its advance during the respective feed step' 'under'relative slipping of the strip and the operable means.

Further objects of the invention and the advantages thereof will become apparent from the following description, reference being made to the accompanying drawing in which:

FIG. 1 shows a diagrammatic side elevational view of an apparatus according to the invention in a listing adding machine;

FIG. 2. shows a plan view of a detail.

In the drawing 1 designates the platen of a listing adding machine, against which platen type bars 2 can be caused to strike in the ordinary manner by means of a printing mechanism (not shown) to write with the interposition of a ribbon (not shown) on a paper sheet advanced around the platen 1. In the example chosen each paper sheet is a label 3 which is provided at its back with pressure sensitive adhesive by which the label is secured to a supporting strip 4.

The labels 3 are arranged in spaced apart relationship on the strip 4 in a row extending longitudinally of the strip. Because of unavoidable variations in the fastening of the labels 3 on the supporting strip 4 the spacing at which the labels 3 are arranged on said strip 4 will vary between a maximum value and a minimum value.

The supporting strip 4 with the labels 3 thereon is 3,075,680 Patented- J an: 2-9; 1963 supplied to the machine from a strip supply not shown,- e.g. "a roll, and is passed over'aguide plate 5 to the platen 1 fromwhich the' supporting-"strip runs toa blade 6which is located above the platen'l and ovei which the support ing strip is bent at'a rather'acute angle in order to pass" to a guide roller 7 and fromthere to astrip' advancing: means which consists of two engaging grooved rolls 8, 9 between which the strip 4 leaves'the machine; When the strip 4 is bent over' the blade 6 the labels 3"onwhich data have been written will be released'froni the stripso as to permit easy removal by the operator;

The feed'rolls- 8 add 9 are niountedfor'rotation on shafts 29 andStlin the machineframe. Theroll- 9*is' driven by the machine in a'manner indicatedinthefbllowing, and the roll 8 is'driven in that it has the'ribs' be tween its grooves engaged with the roll 9. The roll 9' is conneeted, to permit driving thereof, toa-toothed wheel 10 over a friction clutch 28. Said-toothed wheel ltl'is' secured on the shaft 29, and a'feed pawlll canengage said toothed wheel-'lll'to rotate-it through one or more tooth pitches ata time. According to FIG; 2 thefriction' clutch comprises a spring washer 28"clamped between the roll 9 and thetoothed wheel 10. The'feedpawl 11 is formed at the' upper end of area 12 whichhas its 'lower end hingedly connectedto 'one end'of atwo armed lever 13. The lever 13*is mounted on' the machine frame'by means of ashatt14 and theother end of'the lever carries a roller 15 which is held applied by a spring ltvagaiiist' acani'l'l secured to the-"main'shaft of themachinez The cam 17 has a high portion and a low portion which ex tend approximately over equally large angles: During each' niachine cycle the 'cam -isdriven' one revolution" counterclockwise as seen in the drawing fromthe" initial position shown. During the first'half 'of-the machine cycle when the machine I performs 'its' printing operation" the roller 15 runs on the'low portion of the c-am 17 and' after the printingit runs onto the Iiigh poftiQn'Qf-the earn. This will swingrthe" lev'er 1:3 clockwise i from the position shown so that the-rod 12 ispulled downwards and pawl 11" advancesthe toothed wheel 10" by one or more toothpitches clockwiseay seen' in the drawing: During this operation"the rolls*8; 9 will advanc'ethe strip" 4-adistance which isat least'eqaul' 'to, or -corresponding to the'reciprocal of an integer (for'instance' -one third or onequarter) smaller than; the maximum "value 'o'f' the spacing of the-labels-S on thefstrip; At the end 'of-the' operating cycle of the'maehine'the'roller15runs'fromthe high portion of the cam 17 to the low portion thereof, the spring 16 again lifting the rod 12 to the position shown in the drawing without turning the toothed wheel 10 back.

Secured to the rod 12 is a pin 18 on which one end of a two-armed lever 19 rests. Said lever 19 is mounted on the machine frame by means of a shaft 20 and is held applied against the pin 18 by means of a spring 21. Pivotally mounted on the other arm of the lever is a gripping finger 22 by the intermediary of a pin 23. A spring 24 expanded between the lever 19 and the finger 22 tends to hold the finger applied against an abutment 25 on the lever 19. In this position the upper end of the finger 22 lies approximately straight under the axis of the platen 1 between two ordinary application rollers 26 which hold the strip 4 and the labels thereon snugly wrapped around the platen 1. In this position the upper end of the finger 22 is spaced from the strip 4 and the labels 3.

When the rod 12 is lowered for an advance of the strip 4 the spring 21 swings the lever 19 counter-clockwise as seen in the drawing so that the upper end of the finger 22 is pressed against the strip 4 and the labels 3 thereon. When the strip 4 and the labels 3 are advanced around the platen 1 they swing the finger 22 clockwise as seen in the drawing against the action of the spring 24 until the finger 22 abuts a stop 27 on the lever 19. The upper end of the finger 22 then slides against the strip 4 or a label 3. As the strip advance results in that the finger 22 sliding against the strip 4 in the interspace between two labels 3 engages the edge of the following label 3 the finger 22 resting against the top 27 will interrupt the advance of the strip 4 by so engaging the edge of the label, upon slipping of the friction clutch 28. This implies that the advance of a label to writing position will always begin at a determined place, viz. the place where one edge of the label has been arrested by the gripping finger 22 abutting the stop 27 so that the data printed by the type bars 2 on the label will always be in correct position in spite of variations in the spacing of the labels 3 on the strip 4. When the rod 12 is again lifted at the end of the operating cycle of the machine the gripping finger 22 is again moved out of engagement with the strip 4 and labels 3, respectively, the spring 24 moving the finger back into engagement-with the abutment 25.

It would be possible to mount the finger 22 fixedly on the lever 19 but generally it is most advantageous to have the finger 22 pivotal in the manner described so that when lifted towards the platen 1 the finger will be engaged with the strip 4 and the labels 3, respectively, at a place other than that where in the next preceding operation the finger left the strip 4 and the labels 3, respectively. This will prevent the finger 22, when lifted, from engaging an edge of a label with which the finger was engaged in the next preceding operation. Such a renewed engagement of the finger with the same label edge would result in that the intended advance of the strip 4 would fail to come oif.

What we claim and desire to secure by Letters Patent 1s:

1. An apparatus for advancing, from a supply to the platen of a listing machine, a strip having a longitudinal row of spaced sheets arranged on the strip at a spacing varying between a maximum value and a minimum value, and intended to have data printed on them in the listing machine, said apparatus comprising strip feeding means frictionally engaging the strip, drive means intermittently operating said feeding means, said feeding means, each time it is operated, advancing the strip by friction through one step at least equal to the reciprocal of an integer smaller than the maximum value of the sheet spacing, positioning means for positive engagement with an edge of the sheets on the strip, and control means for intermittently urging said positioning means against the strip and the sheets thereon during the feed step at a point after the strip supply as seen in the direction of advance of the strip, whereby when each sheet arrives at said positioning means during the advance of the strip, said positioning means positively engages an edge of the sheet, thereby retaining the strip so as to discontinue its advance during the respective feed step under relative slipping of the strip and said feeding means.

2. An apparatus for advancing from a supply to the platen of a listing machine, a strip having a longitudinal row of spaced sheets arranged on the strip at a spacing varying between a maximum value and a minimum value, and intended to have data printed on them in the listing machine, said apparatus comprising strip feeding means frictionally engaging the strip, drive means intermittently operating said feeding means, said feeding means, each time it is operated, advancing the strip by friction through one step at least equal to the reciprocal of an integer smaller than, the maximum value of the sheet spacing, positioning means for positive engagement with an edge of the sheets on the strip, first and second spaced stop means, mounting means on which said positioning means is mounted for movement between said first and second stop means in a direction substantially along the strip, biasing means connected to said positioning means tending to move said positioning means in a direction opposite to the feed direction of the strip towards said first stop means, and control means for intermittently urging said positioning means against the strip and the sheets thereon during the feed steps at a point after the strip supply as seen in the direction of advance of the strip, whereby when each sheet arrives at said positioning means during the advance of the strip, said positioning means positively engages an edge of the sheet and is moved thereby against the action of said biasing means into engagement with said second stop means, and thereafter with the aid of said second stop means retains the strip so as to discontinue its advance during the respective feed step under relative slipping of the strip and said feeding means.

3. An apparatus according to claim 2, in which said control means is driven by said drive means.

References Cited in the file of this patent UNITED STATES PATENTS 920,844 Elliot May 4, 1909 1,023,797 Batdorf Apr. 23, 1912 1,631,570 Amet June 7, 1927 2,639,148 Adams May 19, 1953 2,802,598 Petterson Aug. 13, 1957 2,920,780 Hauschild et al. Jan. 12, 1960 FOREIGN PATENTS 262,588 Great Britain Dec. 16, 1926 

1. AN APPARATUS FOR ADVANCING, FROM A SUPPLY TO THE PLATEN OF A LISTING MACHINE, A STRIP HAVING A LONGITUDINAL ROW OF SPACED SHEETS ARRANGED ON THE STRIP AT A SPACING VARYING BETWEEN A MAXIMUM VALUE AND A MINIMUM VALUE, AND INTENDED TO HAVE DATA PRINTED ON THEM IN THE LISTING MACHINE, SAID APPARATUS COMPRISING STRIP FEEDING MEANS FRICTIONALLY ENGAGING THE STRIP, DRIVE MEANS INTERMITTENTLY OPERATING SAID FEEDING MEANS, SAID FEEDING MEANS, EACH TIME IT IS OPERATED, ADVANCING THE STRIP BY FRICTION THROUGH ONE STEP AT LEAST EQUAL TO THE RECIPROCAL OF AN INTEGER SMALLER THAN THE MAXIMUM VALUE OF THE SHEET SPACING, POSITIONING MEANS FOR POSITIVE ENGAGEMENT WITH AN EDGE OF THE SHEETS ON THE STRIP, AND CONTROL MEANS FOR INTERMITTENTLY URGING SAID POSITIONING MEANS AGAINST THE STRIP AND THE SHEETS THEREON DURING THE FEED STEP AT A POINT AFTER THE STRIP SUPPLY AS SEEN IN THE DIRECTION OF ADVANCE OF THE STRIP, WHEREBY WHEN EACH SHEET ARRIVES AT SAID POSITIONING MEANS DURING THE ADVANCE OF THE STRIP, SAID POSITIONING MEANS POSITIVELY ENGAGES AN EDGE OF THE SHEET, THEREBY RETAINING THE STRIP SO AS TO DISCONTINUE ITS ADVANCE DURING THE RESPECTIVE FEED STEP UNDER RELATIVE SLIPPING OF THE STRIP AND SAID FEEDING MEANS. 